Kinji Kawamoto

ELECTRONIC MUSICAL INSTRUMENT

An electronic musical instrument capable of suppressing resonance of a soundboard and reducing a peak dip of the frequency characteristic of a musical tone to enable excellent musical sound to be obtained. The soundboard has first and second ends which extend parallel to each other. The first and second ends are secured to a predetermined part of the instrument by first screws and second screws. A vibration exciter is provided on the soundboard and driven according to a musical tone signal to vibrate the soundboard to cause the soundboard to generate a musical tone. The first and second screws are arranged along the respective first and second ends in a staggered manner such that each first screw and each first screw are not opposed to each other in symmetrical relation in a direction orthogonal to the first and second ends.

Voice keying system for a voice controlled musical instrument

A voice keying system for a voice controlled musical instrument comprising a frequency responding circuit for responding to an input signal of audio frequency and generating a control signal which corresponds to each of a plurality of frequency bands of input signal and also to a plurality of notes of a musical scale, and a tone generator for generating an output tone signal corresponding to each of the notes of the musical scale. The input signal is converted into the output tone signal having a smaller rate of frequency increment than that of the input signal in each of the frequency bands thereof.

A Fast Random Accessing Scheme for R-DAT

Recently R-DAT (A Rotary head Digital Audio Tape recorder) system have been attracted as a next generation of audio tape recorder. The R-DAT system realizes high quality sound and fast random accessing capability using Subcode data. Valid data cannot be obtained continuously because magnetic heads do not always trace a recorded track on a tape and the relative velocity between the heads and the recorded track changes when the tape runs fast. So an ingenious contrivance is necessary to read data stably.